Apart from the shitty low RTP's of 90-92 on many of their games which decreases average playtime by over 40% compared to 96% slots...
I'm not Playtime's biggest fan, but I don't think it's fair to try to give the impression they have terrible RTP's.
OK, so you did say "a few" - and that's what it is. The majority are more than 95%.
Info from The Pogg's site (SOME Playtech slots - not all):
Highway King 97.06%
Halloween Fortune 97.06%
Santa Surprise 97.05%
Easter Surprise 97.05%
Skazka 97.01%
Chinese Kitchen 96.92%
Silver Bullet 96.86%
Wild Gambler 96.67%
Reel Classic 5 96.45%
Desert Treasure 2 96.21%
Safari Heat 96.16%
Rome and Glory 96.08%
Football Fans 96.08%
Captain’s Treasure Pro 96.08%
Gin Joint Jackpot 96.00%
Frankie Dettori’s Magic Seven 95.99%
Zhao Cia Jin Bao 95.99%
Hot Gems 95.99%
Atlantis Queen 95.98%
Benchwarmers Football Girls 95.97%
Top Trumps Football Legends 95.96%
Top Trumps Celebs 95.96%
Diamond Valley Pro 95.88%
Silent Samurai 95.72%
Goddess of Life 95.57%
Tennis Stars 95.55%
Kong Eighth Wonder of the World 95.50%
Mr Cashback 95.46%
Pink Panther 95.39%
Cops N Bandits 95.31%
Ice Hockey 95.26%
Thrill Seekers 95.26%
Wild Games 95.24%
Daring Dave and the Eye of Ra 95.18%
Bonus Bear 95.17%
Panther Moon 95.17%
Punisher 95.08%
Samba Brazil 95.08%
Spider Man – Attack of the Green Goblin 95.08%
X-Men 95.03%
Top Trumps World Cup Stars 95.03%
Top Trumps Tennis Stars 95.03%
Top Trumps European Football Stars 95.03%
Ghost Rider 95.03%
Rocky 95.02%
Top Trumps Celebs Cards 95.02%
The Avengers 95.02%
Blade 95.01%
Top Trumps Horror Cards 95.01%
Iron Man 2 94.99%
Archer 94.99%
Thai Paradise 94.99%
The Jazz Club 94.91%
The Incredible Hulk 94.82%
Dolphin Cash 94.58%
Slotblox 94.50%
DareDevil 94.45%
Haunted House 94.41%
True Love 94.35%
Captain America 94.31%
Around the World 94.26%
Penguin Vacation 94.25%
X Men 94.25%
Great Blue 94.25%
Banana Monkey 94.25%
Marilyn Monroe 94.10%
Coffin Up The Cash 94.10%
Gladiator 94.09%
Cherry Love 94.09%
Sparta 94.09%
Midas Millions 94.02%
Dragon Kingdom 94.02%
Everybody’s Jackpot 94.01%
Cowboys and Aliens 94.01%