Reparsing file makes Emacs freeze

[Florian Lindner]

Hello,

my Emacs 24.5 shows, imho only after recently, the message

Reparsing 
/home/florian/precice/src/mapping/tests/PetRadialBasisFctMappingTest.cpp

and freezes for a second or two. This happens inbetween, not just when
saving and it's massively disturbing.

I already disabled semantic-mode, but changed nothing.
Also disabled global-company-mode, flycheck-mode, projectile

Enabled minor modes are:

Enabled minor modes: Abbrev Async-Bytecomp-Package Auto-Composition
Auto-Compression Auto-Encryption Auto-Revert Blink-Cursor
Diff-Auto-Refine Electric-Indent Electric-Pair File-Name-Shadow
Font-Lock Global-Auto-Revert Global-Flycheck Global-Font-Lock
Global-Git-Commit Gud-Tooltip Helm Helm-Flx Helm-Fuzzier Helm-Gtags
Line-Number Magit-Auto-Revert Menu-Bar Mouse-Wheel Override-Global
Recentf Savehist Shell-Dirtrack Show-Paren Subword Tooltip
Transient-Mark

Any idea what could cause this reparsing?

Thanks,
Florian