There seem to a few problems, with Win10 and Lmms 1.1.3
not working nicely with each other. If you want, try zonkmachine's tip.
https://lmms.io/forum/viewtopic.php?f=7&t=27336
And check out musikbears advice too.
It's also possible, that the vst plugins you're trying to use, don't work too good with lmms.
We have a vst wiki list, of vst's that work well in lmms.
https://lmms.io/wiki/index.php?title=Tested_VSTs
Feel free to check it out.
Also, can you give us the names of the vst plugins, that you were trying to use?
PS: And welcome to the forums keorbie.