diff --git a/src/poli/objective_factory.py b/src/poli/objective_factory.py
index da889f57..6bcbef3f 100644
--- a/src/poli/objective_factory.py
+++ b/src/poli/objective_factory.py
@@ -173,16 +173,16 @@ def create(
         **kwargs_for_factory,
     )
 
-    # instantiate observer (if desired)
-    observer = _instantiate_observer(observer_name, quiet)
-    observer_info = observer.initialize_observer(
-        problem.black_box.info, observer_init_info, seed
-    )
-
     f = problem.black_box
-    f.set_observer(observer)
-    f.set_observer_info(observer_info)
-    problem.set_observer(AlgorithmObserverWrapper(observer), observer_info)
+    # instantiate observer (if desired)
+    if observer_name is not None:
+        observer = _instantiate_observer(observer_name, quiet)
+        observer_info = observer.initialize_observer(
+            problem.black_box.info, observer_init_info, seed
+        )
+        f.set_observer(observer)
+        f.set_observer_info(observer_info)
+        problem.set_observer(AlgorithmObserverWrapper(observer), observer_info)
 
     return problem
 
diff --git a/src/poli/objective_repository/gfp_cbas/cbas_wrapper.py b/src/poli/objective_repository/gfp_cbas/cbas_wrapper.py
index fd3af003..a6b42dfb 100644
--- a/src/poli/objective_repository/gfp_cbas/cbas_wrapper.py
+++ b/src/poli/objective_repository/gfp_cbas/cbas_wrapper.py
@@ -13,6 +13,10 @@
 from pathlib import Path
 
 import numpy as np
+import tensorflow as tf
+
+tf.compat.v1.enable_eager_execution()
+tf.config.run_functions_eagerly(True)
 import torch
 import torch.nn as nn
 from scipy.stats import norm as StandardNormal
diff --git a/src/poli/objective_repository/gfp_cbas/make_vae.py b/src/poli/objective_repository/gfp_cbas/make_vae.py
index da520c0d..191e08ca 100644
--- a/src/poli/objective_repository/gfp_cbas/make_vae.py
+++ b/src/poli/objective_repository/gfp_cbas/make_vae.py
@@ -1,4 +1,7 @@
 import tensorflow as tf
+
+tf.compat.v1.enable_eager_execution()
+
 from tensorflow import keras
 from tensorflow.keras.layers import (
     Add,
@@ -12,9 +15,6 @@
 from tensorflow.keras.models import Model
 from tensorflow.python.keras import backend as K
 
-tf.compat.v1.disable_v2_behavior()
-
-
 MAKE_DETERMINISTIC = True
 
 
diff --git a/src/poli/objective_repository/gfp_cbas/register.py b/src/poli/objective_repository/gfp_cbas/register.py
index b9c960bd..ab62c9c6 100644
--- a/src/poli/objective_repository/gfp_cbas/register.py
+++ b/src/poli/objective_repository/gfp_cbas/register.py
@@ -43,13 +43,9 @@ def __init__(
         self.seed = seed
         self.negate = negate
 
-        inner_function = get_inner_function(
-            isolated_function_name="gfp_cbas__isolated",
-            class_name="GFPCBasIsolatedLogic",
-            module_to_import="poli.objective_repository.gfp_cbas.isolated_function",
-            seed=self.seed,
-            force_isolation=self.force_isolation,
-            quiet=False,
+        # NOTE: do NOT us get_inner_function -> importlib resets existing tf import and we CANNOT recover tf.v1 eager execution
+        from .isolated_function import GFPCBasIsolatedLogic  # encapsulate as to not break poli imports
+        inner_function = GFPCBasIsolatedLogic(
             problem_type=self.problem_type,
             info=self.get_black_box_info(),
             n_starting_points=self.n_starting_points,
@@ -120,6 +116,8 @@ def create(
         num_workers: int = None,
         evaluation_budget: int = float("inf"),
         negate: bool = False,
+        force_isolation: bool = False,
+        force_register: bool = False,  # TODO: this is not functional requires correction
     ) -> Problem:
         """
         Seed value required to shuffle the data, otherwise CSV asset data index unchanged.
@@ -129,7 +127,7 @@ def create(
         self.problem_type = problem_type
         if seed is not None:
             seed_python_numpy_and_torch(seed)
-        problem_info = self.get_problem_name()
+
         f = GFPCBasBlackBox(
             problem_type=problem_type,
             functional_only=functional_only,
@@ -141,6 +139,7 @@ def create(
             seed=seed,
             evaluation_budget=evaluation_budget,
             negate=negate,
+            force_isolation=force_isolation,
         )
         x0 = f.x0