Very slow while editing long .ts files

User Support Performance
#1

What happened?

While editing a large .ts file (~2000 lines) I get terrible performances while typing. I have a key-press to char displayed lag of about 2/3 seconds, making the editor unusable. I have absolutely no problems nor delays on other files.

Profiling


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System information


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#2

Based on your profiling results, have you tried disabling font-lock?

#3

I tried now: disabling font-lock gets rid of any sort of lag. After re-enabling it I still don’t have any lag, but completion doesn’t work. I am using company and I have enabled “javascript” in the init.el file.