We ran this app on a legacy iPhone 8 running iOS 15, and experienced zero frame drops or memory crashes. 
http://horsecity.ru/phpBB3/viewtopic.php?f=10&t=158719
https://gravatar.com/thoroughlyf0a4dc59a2
https://www.ww2.site/forum/viewtopic.php?t=352191
https://democratstoughlove.com/showthread.php?tid=13410
https://my-mobile.eu/viewtopic.php?t=12197
https://talkingpoints.org/subx/showthread.php?tid=87935
https://www.ww2.site/forum/viewtopic.php?t=393779
http://vortex.mx.free.fr/forum/viewtopic.php?f=38&t=2065&sid=271b4a4221ddfa746e7d11a925c94d58
https://debate.socialism.nl/forum/showthread.php?tid=177611
http://1.s.2.free.fr/viewtopic.php?f=18&t=485582
https://muchroom.ng/index.php?topic=18285.new#new
http://horsecity.ru/phpBB3/viewtopic.php?f=33&t=192332
https://forum.zweb-apps.xyz/viewtopic.php?t=60266
http://www.lada-xray.net/showthread.php?p=323805#post323805
http://178.210.82.182/forum/besedka/60059-en-g-venilir-slot-sitesi-e-it-derecede-slot-sitesi
https://www.ww2.site/forum/viewtopic.php?t=264908
https://67farms.st/viewtopic.php?t=5124
http://miweii.com/forum.php?mod=viewthread&tid=52908&extra=