Flycast: change reicast_alpha_sorting

Changed to reicast_alpha_sorting = "per-strip (fast, least accurate)" (a little faster)
Could potentially triggers some artefacts but maximum speed seems to be a priority ("small drawback for gain on majority")

RetroArch/.retroarch/config/Flycast/DC.opt

@@ -1,7 +1,7 @@
 reicast_allow_service_buttons = "disabled"
-reicast_alpha_sorting = "per-triangle (normal)"
+reicast_alpha_sorting = "per-strip (fast, least accurate)"
 reicast_analog_stick_deadzone = "15%"
-reicast_anisotropic_filtering = "4"
+reicast_anisotropic_filtering = "2"
 reicast_boot_to_bios = "disabled"
 reicast_broadcast = "Default"
 reicast_cable_type = "VGA (RGB)"