you can install only 32 plugins, the plugin-buffer of OllyDebug itself isn't bigger. if you install more, olly will crash because program-values get overwritten (i guess oleh didn't expect so much plugins, there's no check if buffer is full). either you find a way to rebase & enlarge it or you do what diablo said
you will loose speed if you install every plugin and some also decrease the usuability of ollydbg (e. g. Anti-Anti-Hardware Breakpoint which has problems with F12 > pause).
if the crash is really plugin-issue, you can debug ollydebug by ollydebug and find the problem