KLM lounge in DPS is not good and I am amazed that they CX and SQ still use it as well. I was there in August and flew J from DPS to SIN. food was dreadful wine undrinkable and beer warm, as a Brit the last bit would have impressed if it had not been larger.
Anyway, biggest issue was no free wifi and this is an absolute disgrace in any premium cabin lounge anywhere. frustratingly as we walked to the KLm gate we passed 3 other lounges all of which offer free wifi and all of which could be accessed by priority pass..
I did not go in but in the past have used Prada which is perfectly reasonable on on a par with KLM offering via the premier lounge.
Personally while I think the lounges are poor they are light years away from the domestic offerings by priority pass.....now those really are a shocker!