...I actually thought that Clock Tower PSX had a good dub. At the very least, I've heard far worse from almost every other game released on the Playstation, many of which were supposedly dubbed by native English speakers. Their accents are noticeable, but not glaringly so, and on the whole, they gave far most honest attempts at making their lines sound fluid and believeable than, say, any of Capcom's games from that era.
The PS1 had some terrible voice acting (Xenogears noooo) and I think it really wasn't until after Metal Gear was released that people realized that maybe bringing in pros should be a thing. I remember reading an article about Syphon Filter and the developers said that they hired a truck driver for the voice of Gabe Logan so they wouldn't have to pay him scale. What's funny is that the guy did pretty well.