Has there been any other updates to the performance issues?
I am running a site which has over 100 matrix rows per entry (with 4 columns per row) and saving times are abysmal (can be over 120 seconds).
I understand P&T is working full tilt on Craft, I just wish there was some love shown to EE Matrix :(
Similar and unanswered questions:
Any help would be welcomed :)
My specs
matrix 2.6.1
ExpressionEngine 2.9.2 Build 20141004
jQuery 1.7.2
MySQL 5.6.21-log
Server Microsoft-IIS/8.0
PHP 5.6.3
register_globals off
safe_mode off
open_basedir
max_execution_time 300
upload_max_filesize 50M
max_input_time 900
memory_limit 128M
session_save_path writable