4.1.5 performance issues?

Anyone experiencing performance degredations with 4.1.5, especially compared to 4.0.4? It’s disappointing. I like the overall look and features in 4.1.5, but I can’t use it realiably. It’s slow and uses a ton of system resources. Please help if anyone knows how to tweak this version to put out the same performance as version 4.0.4.

There is a lot of new stuff to turn off under View–>Waveform display.