Palace's development side fell to their first defeat of the season at Queens Park Rangers, although there were some positives for the Eagles with Patrick Bamford grabbing a goal and Jonny Williams playing his first 45 minutes of the season.
The Eagles found themselves two goals down in quick succession just after the half-hour mark when Gianni Crichlow found a way past Palace keeper Kieton Perntreou, and two minutes later centre back Harly Wise scored from close range after a corner.
Bamford then pulled one back on 52 minutes when he scored from a tight angle, but just 60 seconds later their hard work was undone as Ben Gladwin restored the two goal lead when he turned in an Aaron Mitchell cross.
There was a glimmer of hope when Perntreou saved a Frankie Sutherland penalty on 56 minutes, but eight minutes later it was game over when some mis-communication between the keeper and Luke Croll led to the defender scoring an own goal.
Darnell Furlong then added a fifth on 68 minutes as the Hoops looked to run rampant, but it was Palace who would score the final goal of the afternoon when Jake Gray pulled back a consolation with six minutes remaining.
QPR: Lumley, Furlong, Suk-Young, Wise (Jones 64), Kpekawa, Comley, Shodipo, Sutherland, Crichlow (Corkery 64), Mitchell (Manning 64), Gladwin. Sub not used: Hudnott
Palace: Perntreou, Dymond, Croll, Langton, Akiotu, Williams (George 46), Breimyr (Allassani 80), Kaikai, Bamford (Bissaka 70), Gray, Anderson. Subs not used: Gregory, Hoare.