Desktop Sync Connection Timeout when edit a file realtime with applications

Server : 15.0.5
Client : Version 2.5.1final (build 20181204)

Just copy and delete, move files syncs very well, but when I work on a file MAX, PSD with 3dsmax and photoshop, client shows error “connection timeout” and couldn’t process next sync que.
I haven’t tested doc, xml file with m$word, but I guess these files could be got error when edit realtime.