discovery1

you can use both heap programmes, but the setting should be the same. in OSR I use heap no 6 but the heap setting varies for different set ups. yhere is a standard setting for 32 and 64 bit machines, i use heap amount 900 on my rig which seems pretty good...i dont get door crashes anymore. i would try setting the heap low and work your way up until there is an obvious difference. one caveat being that if you set to high, your game may not load. crashes going through doors can be due to missing resources as well, or sometimes even a corrupted save or spawn. If you have not tried this...bring up the console.....type coc center....wait for more than 72 hours....save game and travel back to wherever on the map. this resets all npc and animal etc spawns.

The more mods you have, the more content is added to the game so the GPU can get overwhelmed when entering an area with a lot of objects, usually when going from inside to an outside location. Distant objects can be a problem and mods like better cities make huge differences. The best solution is to use a patch file to make the game use more ram. There is a 4gb patch available. Also using more heap will help either through the "more heap" mode or using " Oblivion Stutter Remover" Open the game ini file in your documents file and set save on exterior switch to 0

if you are using the 4gb patch I would recommend using oblivion stutter remover and play around with the heap setting. somewhere between 750 and 1000 seems to work best for me and stops ctds when fast travelling to open spaces. There is also a stand alone heap mod on the nexus somewhere which is equally as good although does not have some of the extras of osr.

raevwd will kill most pcs. the biggest problem with oblivion is distant objects as far as fps is concerned. I have a NVidia 980 ti and it still struggles. however oblivion reloaded has a ram disc option which does really work, but you have to refresh the ram every time you reboot your pc. the best workaround is to invest in a ram flash drive which retains the flash memory. its the only real option with a game that can only use 1 core of memory despite all the settings in nvida ge force and amds catalyst control panel.

intriguing and I look forward to the fruition of your ideas. I must admit that I toyed with the idea of floating mist patches to augment my "atmospheres" mods, but alas time is a diminishing commodity for me...I rarely get time to load oblivion at the moment. good luck with this.

you could try deleting your ini file from documents/games/oblivion. The game will refresh it after a restart. this cured my identical problem.

I have no installed cd drive, modern pcs are going down that route. I use a stand alone Samsung cd drive usb 3.0 it does the job. I reckon the problem you have is the ini looks for the echo from the disc installation file.

no, a corrupted save can happily let you wander through the game until you arrive at a specific location where maybe dependencies for the save were removed during a mod removal...bang crash.... there are levesl of corruption, the game engine will usually detect a corrupted save when you try and load it but they do sneak by. The only way to prove this is to go back to a save made before a certain affecting mod was removed.

do you use a distant lod generator? or land magic?

too much heap is as bad as too little, best to set it at 400 and work your way up. 1000 gives me the best crash free experience on transitions but stutter improvement is at its best at around 750. a lot depends on your graphics card. Osr works better along side the use of the 4gb patch. I have tried all the algorithms for heap....6 is the best for me using windows 7 and a 2gb amd card.

experience tells me you have a corrupted save along the line. The more mods you have the greater chance of this. I can only suggest you go back chronologically untill you find a stable one. It is a good idea to coc center and wait 72 hours to reset all spawns. Then saveini and save the game, do this when your game is stable and note the save number. I do this every 50 or so saves to make sure I have some sort of backup.