filter seems really slow compared to notepad++ highlight plus select highlighted

[schlichtanders]

for a log file of 30000 lines I get time lacks of more than 10 seconds on an intel i7 with 16 gb RAM

for comparison: the same logfile in notepad++ has no visible delay at all.

is there anything which can be done to increase the speed of filtering?

[mrodalgaard]

Are the file lagging or does it only happen when you filter for a word? How does the filtering work on notepad++?