Buffer Problem with Overdrive and Delay Pedals

I've been mulling it over in my head but thought I'd bring it here for some insight. I've got a pedalboard set up with a switcher so I can completely bypass pedals I'm not using. My main OD is an OCD and sometimes I use a Rat for heavier stuff. I'm running into problems when I go to use my delay (Boss DM2) however. No matter if its on or off, whenever I run my overdirven signal through it it seems to get a little bit louder, more trebbley and more digital sounding. I can't have this. I've also got an Aqua Puss and it doesn't happen with that one for whatever reason. I really want to use the DM3, however, because I like the way it sounds but the sound change with the OCD or Rat on makes it impossible. I've heard that the buffer in the pedals can do this. Is there any way that I can avoid it? Can I change the buffer settings? Would trying a battery help at all? Looking for any suggestions before I sell the pedal.

You are not alone. The OCD can cause some issues with other pedals in the chain. Take it out and see if the Rat does this also. I'm sure someone can explain this better than me.

The OCDs output is a high impedence signal (not buffered well) so pedals placed after it will load the effect and change it's sound.

I had the exact problem with an OCD and dm3. OCD sounded great, then I'd click on the delay and have a tinny signal. Not much you can do about it except place an always-on buffer after the OCD and tune the rig to that so you never hear the change

Thanks for the input. It looks like I'll just have to replace one of the pedals. My Aqua Puss sounds similar to the Boss and doesn't have the buffer problem.

Are there any good echo or longer delay pedals that don't have issues with the OCD?

EHX memory toy? 550ms of delay and it's analogue, like the DM3.