Hello, I recently reinstalled my system and F'em has become completely unusable. Very shortly after opening a project with F'em in it, or adding F'em to a new session, the entire host program will drag to a halt, running at less than one frame per second, and remain that way for what seems to be several minutes of not touching anything. I have never seen anything do this to Reaper before. This happens under F'em versions 1.1.4 through 1.1.6, which are the only ones I have tested.
F'em seemingly produces no extra drag on the CPU or memory - CPU usage remains less than 10% for the whole program and memory usage is only about half a gigabyte. However, Reaper seems to be reporting available system memory to be a much lower value than my system monitor says, although I suspect simply be a result of how Linux utilizes memory.
I have tried reinstalling both versions multiple times - the VST3 version does not seem to read properly in Linux, by the way - but have not made any significant progress. I have also tried running the plugin under Reaper's various compatibility modes, none of which have worked. Unfortunately as Reaper has no console log or any kind of runtime debugging tools I cannot send a memory dump or anything of the sort. All I can say is it does not seem to be anything to do with the UI, as I reverted to the generic UI within reaper and it did not stop the lag.
System information:
- Pop OS 22.04, kernel version 6.0.12-76060006-generic
- Reaper version 6.71 and 6.73
- F'em version 1.1.4, 1.1.5 and 1.1.6
F'em causes host (Reaper) to lag on Linux - DAW unusable
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gridzbispudvetch gridzbispudvetch https://www.kvraudio.com/forum/memberlist.php?mode=viewprofile&u=545244
- KVRer
- 3 posts since 31 Dec, 2021
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Brother Charles Brother Charles https://www.kvraudio.com/forum/memberlist.php?mode=viewprofile&u=271995 - KVRian
- 1112 posts since 3 Jan, 2012 from Alberta, Canada
Try running reaper through console. I use Kubuntu 22.04, so in my case I use KDE’s Konsole.
The Linux console itself will give you lots of information in real time.
The Linux console itself will give you lots of information in real time.
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- KVRian
- 657 posts since 12 Mar, 2013 from Vladivostok
F'em exposes about 40000 parameters, if the host tries to read them at loading, then it will slow for a while 
And it's a known issue for developers AFAIK.
EDIT. I tested F'em in Reaper just now and haven't see a problem you described. It just works.
And it's a known issue for developers AFAIK.
EDIT. I tested F'em in Reaper just now and haven't see a problem you described. It just works.