on Windows 10, using the latest version of Reaper. Just this week, Vital, the VSTi, VST3i, and CLAPi versions, have not been working properly. they run very slowly now, even though before they ran incredible. I know my system should be more than capable of running it, as I’m running an AMD Ryzen 7 3750H as my CPU. I already tried uninstalling and reinstalling Vital, as before the VST3i and VSTi versions were mismatched. If anyone has a solution that works, please let me know! Thank you!
Seems like you may have better luck in the Reaper forums, better suited expertise there.
I should also mention I don’t think it’s an issue with Reaper because the Standalone plugin also lags.
Check your buffer size and oversampling