Severe drawing errors/crashing in Harmony 15

So I started up Harmony 15 and the pencil/brush tool is not working:

When I draw the program lags for a long time (at least 30 sec) then it doesn’t even draw what I drew, just a broken line.
The shape tools work fine but drawing causes severe lag and trying to close the program makes it crash.

I had this issue with Harmony 14 a while ago and I think support said it had to do with graphics card drivers. Right now I have the latest NVidia drivers and windows is up to date. I tried running Harmony 15 with both the integrated graphics card and my GT 680M card. I still have Harmony 14 and it works fine.

Is there anything that can be done?

Intel i7 3630qm 2.40 ghz
20 gb ram
Nvidia GeForce GTX 680m

ok it works fine now, i dont know why