Rider 2025.3 barely usable
Since updating to this version of Rider, it has become barely usable, freezing up my machine and I can hear it pushing itself to full load.
I work in UE5 on the same project and machine for years, and only noticed this behaviour since updating Rider. Opening 2 projects is impossible which is very frustrating having to close 1 just to pop open the other.
Seems others are having the exact same problem.
Could you let us know how to fix this or what is going on?
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Same issue for me. Updated yesterday, tried to open the same project i've been working on for months without any problems (UE 5.3) - no chance. Rider opens it, but is then constantly complaining about heap memory, basically non stop in “Catching up” state, unresponsive, slow, sometimes completely frozen / not even recognizing any input at all. And im working on a 32-core threadripper with 128G RAM.
Sorry to hear about these issues. It sounds like the problems you are encountering might be caused by different underlying issues.
Shea Galley Would you mind collecting performance snapshots and Rider logs as described in:
You can share this information with us via the Upload Service and let us know the Upload ID in this thread
Peter Otto, Could you collect the following information shortly after you see the heap memory warning:
Please send us this information via the Upload Service and let us know the Upload ID.
Peter Otto, as a potential workaround, could you try increasing frontend heap value as described in Advanced configuration → JVM options → Common optionsand letting us know if it helps?
Same happening here since the last Rider update. It happens only on a project that has UE5.3 source code however. The other project that uses UE5.6 Launcher version does not have this problem.
Thanks for getting in touch Kiril.
TL;DR: Seems like newest version is working fine for me now, but if in encounter the issues again, i'll let you know!
After experiencing my issues as described, i rolled back to 2025.2 (thanks to the easy rolllback function of the toolbox!).
When using 2025.3 the last time, i already maxed out the heap memory settings (i got the warning dialog ax. 3 times and always chose to increase the memory limit until it didn't come up again). But after that the IDE was still not responsive, so i ditched any further attempts and just downgraded.
I just downloaded the 2025.3 update again to get the information you asked for. My rider build is now at RD-253.28294.237.
I opened the problematic UE5.3 project, let a full index run (which took way less time now compared to my last attempt) and did not encounter the issues. I then closed the solution, reopened it to let rider process the just cached data and had no issues again. There were also no dialogs regarding heap size this time (i guess the heap settings persisted, because they're already at -Xmx8192m in my .vmoptions for 2025.3). Maybe the 2 updates inbetween this already solved my issues. Just for completeness, i still attached the logs you asked for (ID: 2025_12_01_MRF6RSkLDdEXnysXQ32xPy) but didn't upload the memory snapshot (because its 6.6G).
Cheers
My Rider IDE gets hung “Syncing projects” in a large solution. I am running on a MacBook M2 Max with 32 GB of RAM. This is a large solution that I have been working for years in Rider. Since 2025.3.x, this has been a blocking issue.
What can I do to get past this issue?
Hi, I have a similar problem as Josh Blair, on 2025.3 a solution with a lot of projects hangs at “syncing” or “catching up” and ends up with an insufficient memory error. I opened a separate request but thought I would chime in here as well.
By the way, is the rollback function Peter Otto mentioned available on Mac as well? I couldn't find it.
Hi @Kiril Filin. Thanks for the reply.
In my case, similar to Peter Otto after the update to 2025.3.0.3 last week this behaviour has ceased.
Behavior persists for me in 2025.3.0.3.
Jeffersonmpinheiro I also work a project using a UE5.3 source build (Meta's fork). I had to rebuild the engine last week (for unrelated reasons), so it's possible that's what got the behaviour to stop as well rather than the Rider update. Hard to say.
This behavior is still happening for me on 2025.3.0.3. The editor hangs on the “catching up” message while complaining about low memory.
I'm confused because this happens on one of my solutions but not the other, even though both link against the same UE 5.4 source build. I've cleared the rider caches, deleted intermediates, and still nothing. No idea it happens for one project and not the other.
On my Intel I9 mac 2025.3.0.x is unusable. It loads the project and the minute you do ANYTHING with it…the menu system shuts down and everything else stalls as well. No syntax highlight, no intellisense. Nothing.
I have to downgrade! I have work to do.
I'll check back from time to time.
2025.3.0.4 seems to have fixed it. Either that, or because I recently cleared old files (from previous Rider versions) in my Appdata/Local and Appdata/Roaming folders (and/or was it ProgramData? Don't remember).
2025.3.0.4 fixed it for me. I wasn't using UE5, but was fighting with a huge 50+ project solution.
2025.3.0.4 loads, builds, and debugs just fine as it did before upgrading to 2025.3.0.3.
same issue after updating to 2025.3
..and meanwhile Microsoft Launched their fastest ever Visual Studio 2026. I moved from VS 2022 to JetBrains Rider for the very same reason and even purchased the yearly license. I never invested a penny in VS. Now, I feel like stuck with Rider and my money is wasted
Same here. In a large project, already updated to .NET 10, 2025.3 is extremely slow on my Studio with M2 Max 64 GB RAM. I've thought about upgrading to an M4 Mac Mini. But it just doesn't seem justifible. My M4 Macbook Air has no issues with the exact same project.
Follow up from last post. Enabling Displays have separate spaces has mitigated the issue for me. M2 Max on 15.7.3 (Sequoia). Finally. I think I completely reinstalled Rider two or three times. No similar issue on my M4 Macbook Air. Wondering if anyone is seeing this on Tahoe? Trying to avoid upgrading for now.
Hi all, thank you for your feedback.
The issue related to freezes on a loading project (including hangs on the “catching up”) and high-memory load was fixed in 2025.3.0.4 (https://youtrack.jetbrains.com/issue/RIDER-132952).
Please update your Rider to the latest version from https://www.jetbrains.com/rider/download/ or via Toolbox.
CodeWisdom, The issue that you described should be different than what was discussed above. If this issue is still relevant in the latest version of Rider, please create a new ticket about this problem in YouTrack using this link: https://youtrack.jetbrains.com/newIssue?project=RIDER. And attache Rider logs (Help | Collect Logs and Diagnostic Data) to this ticket after reproducing the issue.
Thank you!