Would not suggest a re-install just yet. A few questions to help us understand your situation:

You said version 2012 right? That's a bit long in the tooth for most here. But, are you up to date with all updates for that year?

Have you tried "return to Factory setting"?

Are you running as an "Admin"?

Did your computer do a Win 10 update?

Have you checked your processor speed? Did Win 10 set it back to 5-10%?

What audio interface and drivers are you using?

What is your default synth?

This will help us Users get on the same page as you.

Jeff


Win11, Intel i7 7700K 4.2Ghz, 32Gb RAM, 2x1Tb HD, 500Gb NVMe, BIAB/RB 2025, MOTU 828MK3 audio, MOTU Midi Express, Yamaha Montage 7, DX7II, TX802, Motif XS Rack, Roland Fantom XR Rack, Oberheim Matrix 1000, VoiceLive3 Extreme, Kontakt 6, SampleTank 4.3