Also, memory footprint of each scan/card image has to be considered!
When I used XLHQs, I could either play a few matches (5-7)
OR do a new draft, maybe play 2-3 draft pool AIs, before Forge always quit on me (talking Android here, but as Timmermac said above, it seems to be a Forge issue).
I didn't really attribute this to the scans before, thinking:"Well, it's still Alpha" (again, Android) until I got reminded once more by something in my image viewers file info on an XLHQ scan.
(I knew of this, since Photoshop shows this info as well, never really needed that info for work before
)
An XLHQ .jpg-file, with a resolution of 745x1040 at 24bit colordepth, while e.g. being only 300kbyte in filesize, uses a memory size of ~2271kbytes or ~2.2mbyte. Per scan.
It seems that Forge starts with 1Gbyte of memory allocation. With that number above in mind, a conservative playing field, mid- to late game, might consist of at least 15 lands on each side, maybe 10 creatures each, up to 5 non land/creature permanents each. Even without throwing in some tokens, or knowing if Forge can use the same image data for multiple instances of the same scan (e.g. lands),
~13% of allocated memory is gone at that point
Now add other sections of displayed cards, like your hand, scrolling through your and your opponents graveyard, etc.
If unused image data isn't properly unloaded from memory, you might add those as well..
..and you can easily approach 20% and more.
For this match (Not sure if and how image memory is wiped between matches)
In short:
Keep the scans memory footprint as low as possible! Forge will run much longer!!
I'm testing 352x491 pngs with a 160 colors palette or "8bit colordepth" and memory footprint is at 0.165mbyte per image. That's just 7.5 percent of an XLHQ image.
Filesize isn't really important here, memory size is.
I'll add an example PNG at the end.
(For example, I think they are still too big for smartphone displays in the ~5.2" range, when zoomed while playing in landscape layout.)
I can now draft, edit, play all 7 AIs, draft again, edit, play 2-3 matches and Forge still runs, without any noticable slowdown
Maybe it'll help you as well!
K.