Classic WoW Frame Drops/Performance Issues

Anybody noticing any issues with frame-dropping in areas with heavy particles? Even with all the settings turned down (particle/spell density, etc.), there are still massive FPS drops.https://ift.tt/3200GMK Also tested in DX11 Legacy, DX11, DX12, same issues all the same, though I think DX12 comes out slightly ahead via /r/wow https://ift.tt/34JHnsK