I've got the perfect way to fix this problem. Buy a SIG Sauer P-226. Problem solved.
The Secret Service reported breakage of the aluminum frames of their SIG226s as early as the 1990s, as did the West German Bundeswehr with the aluminum frames of their postwar 9mm P1 versions of the wartime steel-framed Walther P.38. So did our local PD, who used SIG226s before they switched to Glocks.
The British SAS and Marine Commandos have been fond of the SIG 226 in 9mm, since they don't rust as badly as did their previous L9A1 Browning GPs, which sometimes exhibited slide cracks when hot 9mm loads are used, officially and intentionally or otherwise.
There really is no one easy, simple answer. But if that pistol and the load you've been using in it works well for you, by all means stick with it.