Combine roast, flour, salt and pepper in a large ziplock bag.
Seal and shake to coat beef.
Heat oil in a large skillet over medium-high heat.
Remove beef from ziplock bag, discard any excess flour mixture.
Sauté beef until browned, about 5 minutes.
Place meat into slow cooker.
Add onion soup mix, beef broth,
tomato paste and Worcestershire sauce.
Cover and cook on LOW for 8 hours, until beef is tender. (Adapt cooking time if you use venison, depending on which piece you choose some are soft and other aren't)
Open and add noodles to slow cooker and cover again
Cook on LOW for 15-30 more minutes, until noodles are tender.