[4.x] Serious performance issues under IE 8
Originally posted here earlier today : http://www.sencha.com/forum/showthre...ues-under-IE-8
Update, using EXTJS Example "EXTJS Theme" as the test case.
I’m seeing serious performance issues under IE 8 using 4.0.0
Using Chrome, EXTJS is lightning fast! (much faster than in EXTJS 3.3)
Using FF 3.6, performance is not far off Chrome but I’m seeing a little performance degradation when layouts get more complex.
Using IE 8, large layouts/apps are basically unusable.
I've tried other Machines (VM's and Physical) and I'm still seeing the same performance problems under IE 8.
See attached video...
Part 1: EXTJS Theme running under 3.3 (8 seconds load time)
Part 2: EXTJS Theme running under 4.0.0 (33 seconds load time)
Hope this helps.
I use border layouts for my app ie8
ie8 is terrible with extjs4, a compete change from ext3... most of the world or customers use ie... so would someone look into using reals apps on ie8 not just the simple examples from the examples page