Hi,
I finally could retest everything and it looks like things are going better.
@Mark : I've tested the bêta version of Isa you sent me on August 20 - Isadora 2.4.5b04 - to see if the "Shared OpenGL Ressources" could now be activated. No it doesn't work, I've got the same problems on Isadora's launching. Half of the attempts end up by a crash...
Concerning my problem of Isadora going really slow when I activate my three videoprojectors in Preferences/Stages : I've checked the option "Disable Vertical Retrace Sync" and the problem suddenly disappears. So my patch is working now.
Until here, the fact of sending a splitted movie towards different stages doesn't cause troubles so I hope to be able to let my big patch as it is...
Best regards
Nicolas